Essential Human Anatomy: Systems, Structures, and Functions
History of Anatomy
Ancient Greece & Rome
- Aristotle: Coined “anatome”; dissected animals and named the aorta.
- Herophilus: Known as the “Father of Anatomy”; performed the first human dissections in Alexandria.
- Galen: Dissected monkeys and pigs; his teachings dominated medicine for 1,300 years.
Renaissance Anatomy
- Leonardo da Vinci: Dissected over 30 bodies and created 750+ detailed anatomical drawings.
- Andreas Vesalius: The “Founder of Descriptive Anatomy”; published De fabrica (1543), correcting over
Anatomy of Back Muscles, Pharynx, and Cerebellum
1. Muscles of the Back and Lumbar Triangle
Muscle Groups
- Superficial (Appendicular): Trapezius, latissimus dorsi, levator scapulae, rhomboids.
- Intermediate (Respiratory): Serratus posterior superior and inferior.
- Deep (Intrinsic): Splenius (capitis, cervicis), erector spinae (iliocostalis, longissimus, spinalis), transversospinalis (semispinalis, multifidus, rotatores), segmental (interspinales, intertransversarii), and suboccipital muscles.
Functions and Physiology
- Superficial: Move the scapula and shoulder.
Human Body Systems and Infection Control Essentials
The Digestive System: Function and Health
The digestive system is a group of organs that helps the body break down food, absorb nutrients, and remove waste materials. It plays an important role in maintaining health and providing energy to the body. The digestive process begins in the mouth and ends at the anus.
Key Digestive Organs
The main organs of the digestive system are the mouth, esophagus, stomach, small intestine, large intestine, liver, pancreas, and rectum. Digestion starts in the mouth
Read MoreNanotechnology Characterization and Modern Applications
Scanning Electron Microscopy (SEM)
- Scanning Electron Microscopy (SEM) is a characterization technique used to study the surface morphology of nanomaterials.
- In SEM, a focused beam of high-energy electrons is directed onto the sample surface.
- Electrons interact with the atoms of the sample and produce secondary electrons.
- These emitted electrons are detected and converted into an image.
- SEM provides detailed information about surface structure, particle size, and shape.
- It provides high magnification and
Essential Human Anatomy and Physiology Principles
Mitosis
Mitosis is a type of cell division in which one parent cell divides to form two genetically identical daughter cells, maintaining the same number of chromosomes as the parent cell. It occurs in somatic (body) cells and is essential for growth, repair, and replacement of worn-out cells. Mitosis takes place in four main stages:
- Prophase: Chromosomes become visible and the nuclear membrane disappears.
- Metaphase: Chromosomes align at the equator of the cell.
- Anaphase: Sister chromatids separate
Human Reproductive Biology and Genetics Essentials
Reproductive System Functions
- Produce gametes
- Transport and maintain gametes
- Female supports embryo/fetus
- Produce sex hormones
- Male: testosterone
- Female: estrogen, progesterone
Meiosis
- Produces haploid gametes (23 chromosomes)
- Meiosis I: homologous chromosomes separate; crossing over in Prophase I
- Meiosis II: sister chromatids separate
- Result: 4 haploid cells
- Oogenesis: 1 ovum + polar bodies
- Spermatogenesis: 4 sperm
Male Reproductive System
Testes
- Seminiferous tubules: sperm production
- Sertoli cells: nourish developing